what (a) total number of calls to the Home Affairs Hotline number (0800 60 11 90) were (i) received by the hotline and (ii) dropped before they were attended to, (b) are the service level targets of the call centre, (c) was the achievement against the service level target, (d) is the first contact resolution percentage, (e) customer satisfaction mechanism is in place, (f) customer satisfaction measure was achieved and (g) total number of call centre agents were in the call centre on any one shift in the 2018-19 financial year?